This episode of Food Safety Five discusses research on Listeria biofilms, including sanitizer efficacy and evolutionary insights, and on a persisting Escherichia coli strain in leafy greens. It also covers regulatory developments in the UK, Canada, and the UAE, as well as a potential U.S. ultra-processed foods (UPFs) definition.
A new study found high levels of antimicrobial resistance (AMR) among bacteria isolated from unpasteurized (raw) cow and sheep milk in Pakistan, with the potential to spread resistance genes to other bacteria through the food chain.
Researchers have developed a new, farm-to-fork quantitative microbial risk assessment (QMRA) model to evaluate the risk of Listeria monocytogenes contamination in fresh-cut cantaloupe.
A new study underscores that the level of consumer protection afforded by the food import control measures established in Commission Implementing Regulation (EU) 2019/1793 may not be proportionate to the resources invested.
A UK-based study, led by Quadram Institute researchers, underscores the limitations of traditional enumeration methods for foodborne pathogen surveillance and highlights the need for whole genome sequencing (WGS) to better assess the food safety risk posed by commensal or opportunistic Escherichia coli lineages.
Wageningen University researchers conducted an experimental evolutionary study to explore the genetic and phenotypic mechanisms that drive the enhanced biofilm formation ability of evolved L. monocytogenes strains, identifying the overexpression of a certain protein as a key contributor.
Despite increased regulatory efforts, Salmonella outbreaks linked to chicken remain a significant public health threat in the U.S., reaffirms a new study by CDC and USDA-FSIS researchers. The majority of outbreaks involved chicken parts and five serotypes of concern.
An analysis conducted by Cornell University researchers sought to better understand the genomic characteristics associated with an important reoccurring, emerging, and persistent (REP) Salmonella strain, S. Infantis REPJFX01, to help inform targeted interventions.
A recent study sought to better understand the ability of Listeria monocytogenes biofilms on stainless steel surfaces to withstand common industry sanitizers, chlorine and PAA, using strains and temperature conditions relevant to the fresh leafy greens supply chain.
An ongoing Center for Produce Safety-funded study is investigating the factors contributing to the persistence of a reoccurring, emerging, and persisting (REP) Escherichia coli O157:H7 subtype associated with leafy greens foodborne illness outbreaks, with the goal of developing a risk assessment tool for growers.
